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Table 3 Treatment results of magnetic resonance-guided high-intensity focused ultrasound for groups 1 and 2

From: Volumetric magnetic resonance-guided high-intensity focused ultrasound ablation of uterine fibroids through abdominal scars: the impact of a scar patch on therapeutic efficacy and adverse effects

Variable All patients
n = 76
Group 1
n = 21
Group 2
n = 55
P value
Acoustic sonication power (W) 141.0 ± 25.4 (90–250) 138.6 ± 25.9 (90–180) 142 ± 25.3 (100–250) 0.602
Treatment duration (min) 127.9 ± 55.0 (41–379) 125.4 ± 73.2 (61–379) 128.8 ± 47 (41–258) 0.808
Treatment speed (ml/min) 1.04 ± 0.61 (0.09–2.49) 1.08 ± 0.63 (0.25–2.18) 1.03 ± 0.61 (0.09–2.49) 0.740
Number of therapy sonications per treatment
 overall 33.0 ± 12.2 (14–67) 32.3 ± 15.2 (14–67) 33.2 ± 10.9 (15–65) 0.763
  4 mm 9.5 ± 12.1 (1–39) 11.8 ± 18.3 (1–39) 8.0 ± 7.4 (1–17) 0.659
  8 mm 13.3 ± 10.3 (1–48) 9.1 ± 8.4 (3–28) 14.6 ± 10.6 (1–48) 0.191
  12 mm 11.7 ± 9.3 (1–45) 12.8 ± 8.6 (2–30) 11.2 ± 9.7 (1–45) 0.607
  14 mm 17.4 ± 12.7 (1–50) 19.9 ± 14.0 (1–50) 16.4 ± 12.2 (1–39) 0.385
  16 mm 16.5 ± 14.1 (1–53) 12.5 ± 14.9 (1–46) 17.7 ± 13.9 (1–53) 0.366
NPV ratio (%) 90.3 ± 13.6 (32.0–100.0) 87.0 ± 14.1 (57.5–100.0) 91.5 ± 13.3 (32.0–100.0) 0.205
  1. Values in parentheses represent ranges